/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:27:15,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:27:15,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:27:15,307 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:27:15,307 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:27:15,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:27:15,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:27:15,311 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:27:15,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:27:15,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:27:15,314 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:27:15,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:27:15,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:27:15,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:27:15,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:27:15,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:27:15,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:27:15,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:27:15,321 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:27:15,323 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:27:15,324 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:27:15,325 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:27:15,326 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:27:15,327 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:27:15,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:27:15,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:27:15,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:27:15,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:27:15,331 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:27:15,332 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:27:15,332 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:27:15,333 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:27:15,333 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:27:15,334 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:27:15,336 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:27:15,336 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:27:15,337 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:27:15,337 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:27:15,337 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:27:15,338 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:27:15,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:27:15,340 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 06:27:15,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:27:15,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:27:15,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:27:15,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:27:15,385 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:27:15,385 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:27:15,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:27:15,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:27:15,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:27:15,386 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:27:15,386 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:27:15,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:27:15,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:27:15,388 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:27:15,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:27:15,389 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:27:15,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:27:15,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:27:15,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:27:15,390 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:27:15,390 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:27:15,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:27:15,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:27:15,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:27:15,391 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:27:15,391 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:27:15,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:27:15,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:27:15,391 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:27:15,391 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-08-22 06:27:15,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:27:15,691 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:27:15,694 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:27:15,696 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:27:15,696 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:27:15,697 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-22 06:27:15,756 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ba6e2090/63e119d0fcd342df89b782c806910d9e/FLAG069952a34 [2020-08-22 06:27:16,393 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:27:16,393 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-22 06:27:16,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ba6e2090/63e119d0fcd342df89b782c806910d9e/FLAG069952a34 [2020-08-22 06:27:16,538 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3ba6e2090/63e119d0fcd342df89b782c806910d9e [2020-08-22 06:27:16,548 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:27:16,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:27:16,551 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:27:16,551 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:27:16,554 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:27:16,555 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:27:16" (1/1) ... [2020-08-22 06:27:16,558 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb5ca15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:27:16, skipping insertion in model container [2020-08-22 06:27:16,558 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:27:16" (1/1) ... [2020-08-22 06:27:16,565 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:27:16,706 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:27:18,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:27:18,229 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:27:19,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:27:19,251 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:27:19,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:27:19 WrapperNode [2020-08-22 06:27:19,252 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:27:19,253 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:27:19,253 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:27:19,253 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:27:19,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:27:19" (1/1) ... [2020-08-22 06:27:19,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:27:19" (1/1) ... [2020-08-22 06:27:19,304 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:27:19" (1/1) ... [2020-08-22 06:27:19,304 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:27:19" (1/1) ... [2020-08-22 06:27:19,366 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:27:19" (1/1) ... [2020-08-22 06:27:19,406 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:27:19" (1/1) ... [2020-08-22 06:27:19,425 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:27:19" (1/1) ... [2020-08-22 06:27:19,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:27:19,446 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:27:19,446 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:27:19,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:27:19,448 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:27:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:27:19,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:27:19,515 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:27:19,516 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:27:19,516 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:27:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:27:19,516 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-08-22 06:27:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2020-08-22 06:27:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-22 06:27:19,517 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-08-22 06:27:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:27:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:27:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-08-22 06:27:19,518 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-08-22 06:27:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-08-22 06:27:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-08-22 06:27:19,519 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-08-22 06:27:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-08-22 06:27:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-22 06:27:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-22 06:27:19,520 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:27:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:27:19,521 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:27:22,818 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:27:22,818 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 06:27:22,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:27:22 BoogieIcfgContainer [2020-08-22 06:27:22,828 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:27:22,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:27:22,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:27:22,834 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:27:22,834 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:27:16" (1/3) ... [2020-08-22 06:27:22,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d98fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:27:22, skipping insertion in model container [2020-08-22 06:27:22,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:27:19" (2/3) ... [2020-08-22 06:27:22,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32d98fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:27:22, skipping insertion in model container [2020-08-22 06:27:22,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:27:22" (3/3) ... [2020-08-22 06:27:22,838 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2020-08-22 06:27:22,852 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:27:22,862 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2020-08-22 06:27:22,879 INFO L251 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2020-08-22 06:27:22,912 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:27:22,913 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:27:22,913 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:27:22,913 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:27:22,913 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:27:22,914 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:27:22,914 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:27:22,914 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:27:22,955 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2020-08-22 06:27:22,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-08-22 06:27:22,989 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:27:22,990 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:27:22,991 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:27:23,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:27:23,001 INFO L82 PathProgramCache]: Analyzing trace with hash -179235525, now seen corresponding path program 1 times [2020-08-22 06:27:23,013 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:27:23,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1367664992] [2020-08-22 06:27:23,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:27:23,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:27:24,922 WARN L193 SmtUtils]: Spent 703.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-22 06:27:24,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:27:24,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:27:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:27:25,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1367664992] [2020-08-22 06:27:25,153 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:27:25,153 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:27:25,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485877121] [2020-08-22 06:27:25,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:27:25,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:27:25,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:27:25,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:27:25,176 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 4 states. [2020-08-22 06:27:25,919 WARN L193 SmtUtils]: Spent 645.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-08-22 06:27:33,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:27:33,325 INFO L93 Difference]: Finished difference Result 1776 states and 3147 transitions. [2020-08-22 06:27:33,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:27:33,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-08-22 06:27:33,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:27:33,357 INFO L225 Difference]: With dead ends: 1776 [2020-08-22 06:27:33,357 INFO L226 Difference]: Without dead ends: 1481 [2020-08-22 06:27:33,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:27:33,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2020-08-22 06:27:33,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2020-08-22 06:27:33,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2020-08-22 06:27:33,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2266 transitions. [2020-08-22 06:27:33,510 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2266 transitions. Word has length 324 [2020-08-22 06:27:33,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:27:33,515 INFO L479 AbstractCegarLoop]: Abstraction has 1479 states and 2266 transitions. [2020-08-22 06:27:33,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:27:33,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2266 transitions. [2020-08-22 06:27:33,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-08-22 06:27:33,527 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:27:33,527 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:27:33,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:27:33,528 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:27:33,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:27:33,529 INFO L82 PathProgramCache]: Analyzing trace with hash -220420006, now seen corresponding path program 1 times [2020-08-22 06:27:33,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:27:33,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205169610] [2020-08-22 06:27:33,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:27:33,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:27:34,765 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-22 06:27:34,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:27:34,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:27:34,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:27:34,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205169610] [2020-08-22 06:27:34,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:27:34,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:27:34,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737417724] [2020-08-22 06:27:34,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:27:34,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:27:34,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:27:34,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:27:34,901 INFO L87 Difference]: Start difference. First operand 1479 states and 2266 transitions. Second operand 4 states. [2020-08-22 06:27:35,584 WARN L193 SmtUtils]: Spent 633.00 ms on a formula simplification that was a NOOP. DAG size: 323 [2020-08-22 06:27:42,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:27:42,685 INFO L93 Difference]: Finished difference Result 2852 states and 4423 transitions. [2020-08-22 06:27:42,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:27:42,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2020-08-22 06:27:42,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:27:42,703 INFO L225 Difference]: With dead ends: 2852 [2020-08-22 06:27:42,704 INFO L226 Difference]: Without dead ends: 2439 [2020-08-22 06:27:42,711 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:27:42,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2020-08-22 06:27:42,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2437. [2020-08-22 06:27:42,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-08-22 06:27:42,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3757 transitions. [2020-08-22 06:27:42,803 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3757 transitions. Word has length 324 [2020-08-22 06:27:42,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:27:42,804 INFO L479 AbstractCegarLoop]: Abstraction has 2437 states and 3757 transitions. [2020-08-22 06:27:42,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:27:42,805 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3757 transitions. [2020-08-22 06:27:42,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-08-22 06:27:42,817 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:27:42,817 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:27:42,817 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:27:42,822 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:27:42,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:27:42,823 INFO L82 PathProgramCache]: Analyzing trace with hash -578874774, now seen corresponding path program 1 times [2020-08-22 06:27:42,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:27:42,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1218535175] [2020-08-22 06:27:42,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:27:43,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:27:44,286 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-22 06:27:44,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:27:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:27:44,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:27:44,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1218535175] [2020-08-22 06:27:44,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:27:44,456 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:27:44,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333716281] [2020-08-22 06:27:44,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:27:44,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:27:44,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:27:44,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:27:44,459 INFO L87 Difference]: Start difference. First operand 2437 states and 3757 transitions. Second operand 5 states. [2020-08-22 06:27:54,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:27:54,145 INFO L93 Difference]: Finished difference Result 7199 states and 11086 transitions. [2020-08-22 06:27:54,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 06:27:54,146 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-08-22 06:27:54,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:27:54,170 INFO L225 Difference]: With dead ends: 7199 [2020-08-22 06:27:54,170 INFO L226 Difference]: Without dead ends: 4777 [2020-08-22 06:27:54,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 06:27:54,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2020-08-22 06:27:54,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4653. [2020-08-22 06:27:54,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4653 states. [2020-08-22 06:27:54,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 7163 transitions. [2020-08-22 06:27:54,344 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 7163 transitions. Word has length 324 [2020-08-22 06:27:54,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:27:54,345 INFO L479 AbstractCegarLoop]: Abstraction has 4653 states and 7163 transitions. [2020-08-22 06:27:54,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:27:54,345 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 7163 transitions. [2020-08-22 06:27:54,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-08-22 06:27:54,360 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:27:54,360 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:27:54,361 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:27:54,362 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:27:54,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:27:54,363 INFO L82 PathProgramCache]: Analyzing trace with hash 76253758, now seen corresponding path program 1 times [2020-08-22 06:27:54,363 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:27:54,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422661525] [2020-08-22 06:27:54,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:27:54,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:27:55,479 WARN L193 SmtUtils]: Spent 850.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-22 06:27:55,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:27:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:27:55,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:27:55,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422661525] [2020-08-22 06:27:55,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:27:55,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:27:55,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430853362] [2020-08-22 06:27:55,930 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:27:55,930 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:27:55,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:27:55,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:27:55,932 INFO L87 Difference]: Start difference. First operand 4653 states and 7163 transitions. Second operand 4 states. [2020-08-22 06:28:06,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:28:06,457 INFO L93 Difference]: Finished difference Result 13649 states and 20959 transitions. [2020-08-22 06:28:06,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 06:28:06,458 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-08-22 06:28:06,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:28:06,497 INFO L225 Difference]: With dead ends: 13649 [2020-08-22 06:28:06,498 INFO L226 Difference]: Without dead ends: 9125 [2020-08-22 06:28:06,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:28:06,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9125 states. [2020-08-22 06:28:06,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9125 to 9001. [2020-08-22 06:28:06,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9001 states. [2020-08-22 06:28:06,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 13804 transitions. [2020-08-22 06:28:06,807 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 13804 transitions. Word has length 326 [2020-08-22 06:28:06,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:28:06,808 INFO L479 AbstractCegarLoop]: Abstraction has 9001 states and 13804 transitions. [2020-08-22 06:28:06,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 06:28:06,808 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 13804 transitions. [2020-08-22 06:28:06,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-08-22 06:28:06,826 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:28:06,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 06:28:06,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 06:28:06,827 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:28:06,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:28:06,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1985882685, now seen corresponding path program 1 times [2020-08-22 06:28:06,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:28:06,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [667899807] [2020-08-22 06:28:06,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:28:06,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:28:07,659 WARN L193 SmtUtils]: Spent 695.00 ms on a formula simplification that was a NOOP. DAG size: 322 [2020-08-22 06:28:07,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:28:07,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:28:07,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 06:28:07,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [667899807] [2020-08-22 06:28:07,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:28:07,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 06:28:07,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390468356] [2020-08-22 06:28:07,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 06:28:07,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:28:07,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 06:28:07,814 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 06:28:07,814 INFO L87 Difference]: Start difference. First operand 9001 states and 13804 transitions. Second operand 4 states.